1. Time and items of the first prenatal check-up In the early stages of pregnancy, pregnant women need to have their first prenatal check-up. It is usually performed at 6-8 weeks of pregnancy. At this time, the fetus already has a heartbeat, and ultrasound examination can be used to confirm whether it is developing normally. In addition, doctors will also ask pregnant women about their physical condition, family history and other information, and conduct physical examinations and blood tests. 2. Time and items of the second prenatal checkup The second prenatal checkup is usually conducted around 12 weeks of pregnancy. By this time, the fetus has already taken on obvious shape.